I haven't watched through the whole video yet, and thus far one of the most disturbing images I've seen was where the guy was jumping and stomping on the chickens and throwing them into a wall. I cant speak for the other events, but I know that this event happened at a facility which provided meat for KFC. KFC launched their own investigation of the incident, and anyone involved was fired/reprimanded.
I don't think the meat industry is inherently bad, there are just some severely f*ed up people working in it (as in any industry). The unfortunate result is that instead of someone sabotaging the company website or embezzling funds, they resort to brutalizing animals.
